CN213539843U

CN213539843U - Movable shelter laboratory with improved ventilation system

Info

Publication number: CN213539843U
Application number: CN202021931416.2U
Authority: CN
Inventors: 陈德义
Original assignee: Guangdong Tmoon Laboratory Equipment Manufacturing Co ltd
Current assignee: Guangdong Tmoon Laboratory Equipment Manufacturing Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-06-25
Anticipated expiration: 2030-09-07

Abstract

The movable shelter laboratory with the improved ventilation system is characterized in that a main experimental space and a power equipment room are sequentially arranged in a space constructed by a cabinet body from left to right; the power equipment room is arranged at the right end part of the cabinet body; a transverse side wall door is arranged on the front outer side wall or the rear outer side wall; an air supply main machine is arranged in the power equipment room, a first purification unit for air purification is arranged in the air supply main machine, an air supply pipeline communicated with the experiment main space is arranged in the pipeline arrangement space, and the air supply pipeline is used for conveying air generated by the air supply main machine to the experiment main space; be provided with the return air passageway in the experiment main space, lay the return air machine that is provided with and outside space direct intercommunication in the space at the pipeline, be connected with the exhaust duct between return air passageway and the return air machine, the return air system that return air passageway, exhaust duct and return air machine constitute directly discharges the air in the experiment main space outdoors, and the air outlet of return air system arranges on the lateral wall of the cabinet body.

Description

Movable shelter laboratory with improved ventilation system

Technical Field

The invention relates to a laboratory technology, in particular to a structural improvement of a movable shelter laboratory.

Background

Among the prior art, the prior art relating to mobile laboratories is numerous.

For example, the invention patent application with the application number of 200410053496.5 and the name of 'mobile safety laboratory' discloses a box body comprising a vehicle, two changing rooms with doors communicated are arranged in the box body, a laboratory and a storage room, a first changing room is arranged at the door inlet end of the box body, a second changing room is arranged at one side of the box body and is communicated with the laboratory, experimental devices are respectively arranged at two sides of the inner wall of the laboratory, one side of the experimental devices is mainly provided with a laboratory table and a central control system, the other side of the experimental devices is sequentially provided with a reagent liquid adding area, a sample processing area and a PCR amplification area which are separated by a partition plate, the partition plates of two adjacent experimental areas are respectively provided with a transfer window, the working tables of the experimental areas are respectively provided with relevant experimental devices, the front side of each experimental device is provided with a transparent baffle plate sealed by a sealing gasket, the lower side of the PCR amplification area is provided with a stabilized voltage power supply, the storage room is arranged below the laboratory table of the central, and a gas purification air-conditioning system is also arranged in the laboratory.

Secondly, application number 200420109896.9, entitled "assembled gene diagnosis standard laboratory", discloses that it is formed by combining prefabricated parts and connecting pieces on site, including the passageway, three laboratories have been arranged side by side in one side of passageway, the middle is the sample preparation laboratory, its both sides are respectively for reagent preparation laboratory and PCR amplification laboratory, each laboratory all is equipped with inside, outside two rooms, the outside adjacent with the passageway is the buffer zone of each laboratory respectively, the inside is the laboratory zone of each laboratory respectively, there are laboratory table and cupboard in each laboratory zone, relevant experimental facilities have been placed on the laboratory table, two adjacent laboratory zones have floor type pass-through window to communicate.

SUMMERY OF THE UTILITY MODEL

In a mobile laboratory, it is conceivable to equip the laboratory devices of the respective classes. The structure disclosed in the prior art can be seen as a laboratory for general non-infectious bacteria, but since it does not have a self-isolation function for the air system, it is impossible to use a mobile laboratory for infectious viruses such as SARS in 2003 or new coronavirus in 2020.

In order to solve the problems, the invention provides a movable shelter laboratory with an improved ventilation system, which comprises a movable rectangular cabinet body, wherein the cabinet body comprises four outer side walls, namely a front outer side wall and a rear outer side wall which are transversely arranged, a left outer side wall and a right outer side wall which are vertically arranged, a cabinet top wall arranged above the four outer side walls and a cabinet bottom wall arranged below the four outer side walls; the intelligent cabinet is characterized in that an experiment main space and power equipment rooms are sequentially arranged from left to right in a space constructed by the cabinet body, the top layer of the experiment main space is a suspended ceiling layer, and a pipeline layout space is arranged between the top wall of the cabinet and the suspended ceiling layer; the power equipment room is arranged at the right end part of the cabinet body, and the right side of the cabinet body is provided with a right gate; a transverse side wall door is arranged on the front outer side wall or the rear outer side wall; an air supply main machine is arranged in the power equipment room, a first purification unit for purifying air is arranged in the air supply main machine, an air supply pipeline communicated with the experiment main space is arranged in the pipeline arrangement space, and the air supply pipeline is used for conveying air generated by the air supply main machine to the experiment main space; the air-conditioning cabinet is characterized in that a return air channel is arranged in the experiment main space, a return air machine directly communicated with an external space is arranged in the pipeline layout space, an exhaust pipeline is connected between the return air channel and the return air machine, a return air system consisting of the return air channel, the exhaust pipeline and the return air machine directly exhausts air in the experiment main space to the outside, and an air outlet of the return air system is arranged on the outer side wall of the cabinet body.

Wherein, in order to keep loading and unloading and transportation problem when portable, still be provided with the hoist and mount ear or the erection joint hole that are used for loading and unloading and transportation on the main part steel structure of the cabinet body.

The top layer of the experiment main space is a suspended ceiling layer, and a pipeline layout space is arranged between the cabinet top wall and the suspended ceiling layer. That is, the ceiling layer is arranged at the top cloth part of the main experiment space and can be used for preventing air in different laboratory spaces from communicating with each other through the pipeline arrangement space in a sealed manner. For this purpose, the further technical scheme can also be that the suspended ceiling layer is a sealing structure layer. The pipeline layout space is a transition space between the suspended ceiling layer and the top wall of the cabinet, is specially used for accommodating various power pipelines, and can also play a role in heat insulation to improve the heat efficiency. The pipeline layout spaces at the upper parts of the different experiment space units can be communicated or separated by partition plates.

In order to reduce the transmission of external solar heat to the laboratory and the outward dissipation of heat in the laboratory, a further technical scheme may be that a heat insulation layer is further disposed on the suspended ceiling layer, and the heat insulation layer is laid on the inner side of the suspended ceiling layer.

The further technical scheme can also be that the suspended ceiling layer is a sealing structure layer.

The power equipment room is arranged at the right end of the cabinet body, and the right side of the cabinet body is provided with the right side gate, so that the layout structure is simplified, and the power equipment can be conveniently installed and maintained through the right side gate.

The lateral side wall door is an entrance door entering the experiment main space, such as the experiment operation space and a buffer room of the experiment operation space. The main experimental space may be accessed directly through the lateral side wall door or may be accessed after passing through the intermediate gallery as will be mentioned below.

The air supply host is internally provided with a fan which is used for conveying fresh air which is sterilized, filtered and purified into the experiment main space; the air supply main machine is also provided with a first purification unit for air purification, and the first purification unit is used for sterilizing, filtering and purifying air.

The air return channel arranged in the experiment main space can be an air pipe which is independently arranged and fixedly arranged, and can also be an air passing channel integrally formed by utilizing a partition wall.

According to the structure, the beneficial technical effects can be found that firstly, the air supply system consisting of the air supply main machine and the air supply pipeline and the air return system are completely divided into independent systems, so that the use safety can be greatly improved; secondly, the air return fan is arranged in the pipeline arrangement space, so that the space in the experiment main space is not occupied, and the sound insulation effect is good; thirdly, because the experiment main space is internally provided with an air return channel, the air inlet of the air return system can be arranged at a lower position, and the distance between the air inlet of the air return system and the air outlet of the air supply system is relatively long.

In the above scheme, the outer side wall of the cabinet body may be provided with an air outlet with a louver window connected to the air return system, and the inlet and outlet ends of the air return machine are respectively connected to the air return channel and the louver window through soft exhaust pipelines.

The further technical scheme can also be that an air inlet cover is arranged on the ceiling layer of the experiment main space, and the air supply pipeline is connected to the air inlet cover so as to convey air generated by the air supply host machine to the experiment main space through the air inlet cover; and a second purification unit for purifying air is arranged in the air inlet cover. Wherein, the second purification unit is also used for sterilizing, filtering and purifying air. Wherein the air inlet cover is arranged on the suspended ceiling layer. Through twice purification like this, improved greatly and entered into the cleanliness factor of the air in the experiment main space.

The air return system can be further provided with a third purifying unit for purifying air. Thus, the third purifying unit can effectively reduce the germs in the air entering the external space.

The technical scheme can also be that the return air channel is arranged at a corner, and an inlet of the return air channel is close to the indoor ground.

The air supply host and the air return machine are respectively in signal connection with the controller, and the controller is used for controlling the air pressure value in the experiment operation space through the air supply host and the air return machine. The controller is also a control center of the whole mobile laboratory, can be an integrated central controller, and can also comprise a combination of several sub-controllers of different professional types; the controller respectively controls the rotating speeds of the air supply host and the air return machine or controls the throttle valves arranged in the air supply system and the air return system, so that air pressure regulation is realized, and air pressures in different areas in the experiment main space are reasonably regulated. The air supply main machine and the air return machine can be variable frequency motors, the controller controls the rotating speed of the fan in a variable frequency control mode to control air pressure, and can also control the air pressure in a mode of controlling flow through a valve.

The technical scheme can be that the experiment main space comprises an experiment operation space and a buffer room arranged at the door of the experiment operation space, a middle buffer door is arranged between the experiment operation space and the buffer room, and the buffer room is arranged between the transverse side wall door and the middle buffer door; the experimental operation space and the buffer room are respectively provided with an own air return system, and the controller is used for leading the air pressure in the experimental operation space to be lower than the air pressure in the buffer room and leading the air pressure in the buffer room to be lower than the external atmospheric pressure through the respective air return systems in the experimental operation space and the buffer room.

The lateral side wall door is an entrance door entering the experiment main space, such as the experiment operation space and a buffer room of the experiment operation space. The main experimental space may be accessed directly through the lateral side wall door or may be accessed after passing through the intermediate gallery as will be mentioned below. To this end, the buffer bay is interposed between the lateral side wall door and the intermediate buffer door, and is defined as being located between the lateral side wall door and the intermediate buffer door, and also being located between the intermediate vestibule and the intermediate buffer door.

The technical scheme can be that the experiment main space further comprises a middle corridor arranged on the front side, the transverse side wall door comprises a first side door and a second side door which are arranged on the front outer side wall, and the first side door and the second side door are the entrance doors of the middle corridor; middle corridor, experiment operating space are provided with the return air system of oneself separately, the controller is used for passing through middle corridor, experiment operating space's return air system separately lets interior atmospheric pressure is less than in the buffering in the middle corridor.

The invention can be applied to movable laboratory products due to the characteristics and advantages.

Drawings

FIG. 1 is a schematic plan view of a mobile laboratory product incorporating aspects of the present invention;

FIG. 2 is a schematic front side view of a mobile laboratory product incorporating aspects of the present invention;

FIG. 3 is a schematic rear side view of a mobile laboratory product incorporating aspects of the present invention;

fig. 4 is a schematic layout of the power plant.

Detailed Description

The PCR mobile shelter laboratory product applying the scheme of the invention is further specifically described with reference to the attached drawings. As shown in the drawings, the movable shelter laboratory product comprises a movable rectangular cabinet body 100, wherein the cabinet body 100 comprises four lateral walls, namely a front lateral wall 11 and a rear lateral wall 12 which are transversely arranged, a left lateral wall 13 and a right lateral wall 14 which are vertically arranged, and a cabinet top wall 15 and a cabinet bottom wall 16 which are arranged above and below the four lateral walls. An experiment main space and a power equipment room 27 are sequentially arranged from left to right in the space constructed by the cabinet body 100, the top layer of the experiment main space is a suspended ceiling layer 20, and a pipeline layout space 18 is arranged between the cabinet top wall 15 and the suspended ceiling layer 20; the power equipment room 27 is arranged at the right end of the cabinet body 100, a right gate 17 is arranged on the right side of the cabinet body 100, and the right gate 17 is directly communicated with the power equipment room 27 from the right side. The front outer side wall 11 is provided with a first lateral side wall door 111, a second lateral side wall door 112, and a front louver 115 on the left and right. A power distribution cabinet 275 is further arranged in the experiment main space, an external power supply interface is arranged on the rear outer side wall 12 of the cabinet body, and the external power supply interface is electrically connected to the power distribution cabinet 275. A plurality of rear louver windows 125 are also provided on the upper portion of the rear outer side wall 12 of the cabinet.

The experiment main space comprises an experiment operation space, the experiment operation space comprises a front experiment space and a washing room 25 which are sequentially arranged from left to right, the front experiment space further comprises a reagent preparation room 21, a sample preparation room 22, a product amplification room 23 and an amplification analysis room 24 which are sequentially arranged from left to right, and each experiment operation space is isolated by a partition wall and is respectively provided with a first internal transmission window, a second internal transmission window 32, a third internal transmission window 33 and a fourth internal transmission window 34 on the partition wall between the experiment operation space and the sample preparation room. The main experiment space further comprises a reagent buffer room 211, a sample front buffer room 221, a pre-amplification buffer room 231 and a pre-analysis buffer room 241 which are respectively arranged at the door openings of the reagent preparation room 21, the sample preparation room 22, the product amplification room 23 and the amplification and analysis room 24 of the front experiment space, wherein the washing room 25 and the amplification and analysis room 24 share one analysis buffer room 241.

A front transfer window 35 is arranged between the front experimental space and the external space, the front transfer window 35 is opened to the external space of the rear outer side wall 12, and meanwhile, the front transfer window 35 is also used as the first internal transfer window;

a rear transfer window 36 is provided between the clean room 25 and the external space, and the rear transfer window 36 opens to the external space of the rear outer side wall 12. The front transfer window 35 facilitates the transportation of materials, laboratory reagent drugs, sampled virus-containing samples, etc. from the outside into the front laboratory space without allowing the entry of these hazardous materials through walkways such as the first and second

lateral side walls

111, 112, which improves safety, and the rear transfer window 36 facilitates the removal of materials, laboratory reagent drugs, sampled virus-containing samples, etc. from the washroom 25 without allowing the removal of these hazardous materials through walkways such as the first and second

lateral side walls

111, 112, which again improves safety.

The transfer window is an intermediate transition device for transferring materials, and generally at least comprises two door leaves which are split and locked with each other, and when a first door leaf is opened, the other door leaf cannot be opened, so that the safety of transferring materials can be greatly improved. In the installation, the front transfer window 35 rides on the crossing position of the reagent preparation room 21, the partition wall between the sample preparation rooms 22 and the rear outer side wall 12, the front transfer window 35 has three door leaves so as to transfer materials in three directions, one opening to the reagent preparation room 21, one opening to the sample preparation room 22 and one opening to the outer space; the rear transfer window 36 is mounted in a partition of the washing station in the decontamination chamber 25 to facilitate the operation, and the rear transfer window 36 has two door leaves to transfer the material in two directions, one toward the decontamination chamber 25 and one toward the outer space.

As shown in fig. 3, in order to improve the protection of the front and

rear transmission windows

35, 36, a front cover plate 351 and a rear cover plate 361 that can be turned over are respectively hinged on the outer surfaces of the front and

rear transmission windows

35, 36, and the front and rear cover plates 351, 361 are hinged on the rear outer side wall 12. The foldable umbrella further comprises a cover support (not shown in the figures) arranged between the rear outer side wall 12 and the front and rear cover plates 351 and 361, and when the front and rear cover plates 351 and 361 are turned over, the cover support can support the front and rear cover plates 351 and 361. Therefore, the front and

rear transfer windows

35 and 36 can be respectively covered and protected by the front and rear cover plates 351 and 361, and the front and rear cover plates 351 and 361 can be turned up to continue to provide the functions of shading the sun and shielding the rain for the front and

rear transfer windows

35 and 36.

A reagent intermediate buffer door 212, a sample intermediate buffer door 222, an amplification intermediate buffer door 232, an analysis intermediate buffer door 242 and a washing intermediate buffer door 252 are respectively arranged between each experiment operation space and each corresponding buffer room, and the buffer rooms are arranged between the transverse side wall doors and the intermediate buffer doors. The lateral side wall door is an entrance door entering the experiment main space, such as the experiment operation space and a buffer room of the experiment operation space. The main experimental space may be accessed directly through the lateral side wall door or may be accessed after passing through the intermediate gallery 26 as will be described below. To this end, the buffer bay is interposed between the first side door 111, the second side door 112 and the middle buffer door, and is defined as being located between the first side door 111, the second side door 112 and the middle buffer door, and also being located between the middle corridor 26 and the middle buffer door.

The experiment main space further comprises a middle corridor 26 arranged on the front side, and the first side door 111 and the second side door 112 are both entrance doors of the middle corridor 26; the washing room 25 and the amplification and analysis room 24 share a buffer room 241, and the reagent buffer room 211, the sample front buffer room 221, the amplification front buffer room 231, the analysis front buffer room 241 and the middle corridor 26 are respectively communicated through a reagent buffer entrance door 213, a sample buffer entrance door 223, an amplification buffer entrance door 233 and an analysis buffer entrance door 243; the washing compartment 25 and its door opening washing buffer compartment 241 are completely isolated from the intermediate corridor 26 by the analysis buffer entrance door 243.

An air supply main machine 271 is arranged in the power equipment room 27, and the air supply main machine 271 is connected with the power supply of the power distribution cabinet 275; the air supply main machine 271 is provided with a first purification unit for purifying air, the pipeline layout space 18 is provided with an air supply pipeline 2711 which is respectively communicated with the experiment operation space and the buffer room, and the air supply pipeline is used for conveying air generated by the air supply main machine 271 to the experiment main space. An air inlet cover (not shown) is disposed on the ceiling layer 20, and the blowing duct 2711 is connected to the air inlet cover so that the cold air generated by the blowing main machine 271 can be delivered to the main experiment space through the air inlet cover; and a second purification unit for purifying air is arranged in the air inlet cover. Wherein, the second purification unit is also used for sterilizing, filtering and purifying air. Wherein the air inlet hood is mounted on the ceiling layer 20. Through twice purification like this, improved greatly and entered into the cleanliness factor of the air in the experiment main space.

A first return air channel 214, a second return air channel 224, a third return air channel 234, a fourth return air channel 244, a fifth return air channel 254 and a sixth return air channel 264 are arranged in the experimental main space, and a return air channel (drawn but not marked in the figure) is also arranged in each single unit such as the buffer room. The air return channel is arranged at the corner of each unit space and is integrally formed with the partition wall, the inlet of the air return channel is close to the indoor ground, and the lowest point of the inlet is controlled within 20 centimeters from the indoor ground. Of course in other embodiments the return air duct may be provided as a separate duct. A return air fan (not shown in the figure) directly communicated with an external space is arranged in the pipeline layout space 18, an exhaust pipeline is connected between the return air channel and the return air fan, an air return system consisting of the return air channel, the exhaust pipeline and the return air fan directly exhausts the air in the experimental main space to the outside, and air outlets of the return air system are respectively arranged on the front louver window 115 and the rear louver window 125 on the front outer side wall 11 and the rear outer side wall 12 of the cabinet body. And the experimental operation space and the buffer room are respectively provided with an own air return system. The air return system is provided with a third purification unit for purifying air, and the third purification unit can be arranged on the air return channel, the exhaust pipeline or the air return machine. Thus, the third purifying unit can effectively reduce the germs in the air entering the external space. Therefore, the air supply system consisting of the air supply main machine 271 and the air supply pipeline and the air return system are completely divided into independent systems, so that the use safety can be greatly improved; and secondly, the air return fan is arranged in the pipeline arrangement space 18, so that the space in the experiment main space is not occupied, and the sound insulation effect is good.

The air pressure test device is characterized by further comprising a controller (not shown in the figure) arranged in the middle corridor 26, wherein the control switch, the air supply host 271 and the air return machine of the power distribution cabinet 275 are in signal connection with the controller, and the controller is used for controlling the air supply host 271 and the air return machine respectively to enable the air pressure value in the experiment operation space to be relatively lower than the air pressure value in the buffer room. The controller is a control center of the whole mobile laboratory, can be an integrated central controller, and can also comprise a combination of several sub-controllers of different professional types.

In order to solve the problems of loading, unloading and transportation when the cabinet body 100 is movable, a lifting lug or a mounting connection hole for loading, unloading and transportation is further arranged on the main steel structure of the cabinet body 100.

Wherein the ceiling layer 20 can be sealed for preventing air in different laboratory spaces from channeling through the piping installation space 18.

The pipeline layout space 18 is a transition space between the suspended ceiling layer 20 and the cabinet top wall 15, is specially used for accommodating various power pipelines, and can also play a role in heat insulation to improve heat efficiency.

In order to reduce the transmission of the external solar heat to the laboratory and the outward dissipation of the heat in the laboratory, a heat insulation layer (not shown) is disposed on the inner side of the suspended ceiling layer 20.

The pipeline layout spaces 18 at the upper parts of the different experimental space units can be communicated or separated by a partition plate.

The power equipment room 27 is disposed at the right end of the cabinet 100, so that not only the layout structure can be simplified, but also the installation and maintenance of the power equipment can be facilitated through the right gate 17.

In another embodiment, the middle corridor 26 may not be provided, and a separate lateral side wall door (entrance door) corresponding to each front buffer room is directly provided on the front outer side wall 11, which is more advantageous for independent management.

The technical scheme includes that an air pressure measuring device (not shown in the figure) for measuring air pressure values is arranged in the experiment operation space and the buffering room respectively, the air pressure measuring device is in signal connection with the controller, and the controller is used for controlling the air supply host 271 and the air return machine respectively to enable the air pressure in the experiment operation space to be lower than the air pressure in the buffering room and enable the air pressure in the buffering room to be lower than the external atmospheric pressure according to air pressure data fed back by the air pressure measuring device. This further allows the absolute air pressure in each laboratory space to be controlled within a reasonable range so that the laboratory personnel have a more comfortable working environment.

Further, as shown in fig. 1 and 4, an air conditioner 272, a water storage tank 273 and a sewage treatment device 274 may be further disposed in the power plant room 27, and the air conditioner 272, the water storage tank 273 and the sewage treatment device 274 are respectively in signal connection with the controller; the water storage tank 273 is used for supplying water for experiments, operations or cleaning to the laboratory, and the sewage processor 274 is used for recovering sewage in the laboratory, purifying and disinfecting the sewage, and discharging the sewage. The air supply main machine 271 and the water storage tank 273 are arranged in the left and right direction and arranged in the upper space of the power equipment room 27 in an overhead manner, the air conditioner main machine 272 is positioned below the left side of the air supply main machine 271, and the sewage treatment device 274 is arranged below the water storage tank 273; a fan coil is disposed in the air supply main unit 271, and the air conditioner main unit 272 and the fan coil are connected by a refrigerant pipe 2712 so as to cool air supplied from the air supply main unit 271. Therefore, the combined structure among the air conditioner main machine 272, the fan coil and the air supply main machine 271 is simplified, and the reserved space can flow out of the lower part of the air supply main machine 271, so that a movable generator can be placed or related materials can be temporarily stacked, and the utilization rate of the space is greatly improved.

Further technical solution may also be that louvers 19 are provided on the left and right side walls of the power plant room 27, so that heat dissipation can be achieved and air circulation can be maintained.

Further, according to a further technical solution, a first light-transmitting window 113 and a second light-transmitting window 114, a third light-transmitting window 123 and a fourth light-transmitting window 124 are respectively disposed on the front outer side wall 11 and the rear outer side wall 12 associated with the experiment operating space. The light-transmitting window can be used for lighting and also can be used for temporary wind collection under the condition that a sealing window sash is arranged.

Claims

1. The movable shelter laboratory comprises a movable rectangular cabinet body, wherein the cabinet body comprises four outer side walls, namely a front outer side wall and a rear outer side wall which are transversely arranged, a left outer side wall and a right outer side wall which are vertically arranged, and a cabinet top wall and a cabinet bottom wall which are arranged above and below the four outer side walls; the intelligent cabinet is characterized in that an experiment main space and power equipment rooms are sequentially arranged from left to right in a space constructed by the cabinet body, the top layer of the experiment main space is a suspended ceiling layer, and a pipeline layout space is arranged between the top wall of the cabinet and the suspended ceiling layer; the power equipment room is arranged at the right end part of the cabinet body, and the right side of the cabinet body is provided with a right gate; a transverse side wall door is arranged on the front outer side wall or the rear outer side wall; an air supply main machine is arranged in the power equipment room, a first purification unit for purifying air is arranged in the air supply main machine, an air supply pipeline communicated with the experiment main space is arranged in the pipeline arrangement space, and the air supply pipeline is used for conveying air generated by the air supply main machine to the experiment main space; the air-conditioning cabinet is characterized in that a return air channel is arranged in the experiment main space, a return air machine directly communicated with an external space is arranged in the pipeline layout space, an exhaust pipeline is connected between the return air channel and the return air machine, a return air system consisting of the return air channel, the exhaust pipeline and the return air machine directly exhausts air in the experiment main space to the outside, and an air outlet of the return air system is arranged on the outer side wall of the cabinet body.

2. The movable shelter laboratory with improved ventilation system as claimed in claim 1, wherein an air inlet hood is provided on a ceiling layer of the experiment main space, and the air supply duct is connected to the air inlet hood so that the air generated by the air supply main machine can be supplied to the experiment main space through the air inlet hood; and a second purification unit for purifying air is arranged in the air inlet cover.

3. The improved ventilation system movable shelter laboratory as claimed in claim 1, wherein a third purification unit for air purification is provided in the return air system.

4. The improved ventilation system portable shelter laboratory as claimed in claim 1, wherein said return air duct is located at a corner of a wall and the inlet of said return air duct is located near the floor of the room.

5. The improved ventilation system movable shelter laboratory as claimed in claim 1, wherein a thermal insulation layer is further provided on the suspended ceiling layer, and the thermal insulation layer is laid on the inner side of the suspended ceiling layer.

6. The movable shelter laboratory with the improved ventilation system as claimed in any one of claims 1 to 5, further comprising a controller, wherein the air supply host and the air return fan are respectively in signal connection with the controller, and the controller is used for controlling the air pressure value in the experimental operation space through the air supply host and the air return fan.

7. The improved ventilation system movable shelter laboratory as claimed in claim 6, wherein a blast control valve is arranged on the blast pipeline, and the blast control valve is in signal connection with the controller.

8. The improved ventilation system movable shelter laboratory as claimed in claim 6, wherein the experiment main space comprises an experiment operation space and a buffer room arranged at the door opening of the experiment operation space, an intermediate buffer door is arranged between the experiment operation space and the buffer room, and the buffer room is arranged between the transverse side wall door and the intermediate buffer door; the experimental operation space and the buffer room are respectively provided with an own air return system, and the controller is used for leading the air pressure in the experimental operation space to be lower than the air pressure in the buffer room and leading the air pressure in the buffer room to be lower than the external atmospheric pressure through the respective air return systems in the experimental operation space and the buffer room.

9. The improved ventilation system movable shelter laboratory of claim 8, wherein the main experimental space further comprises a middle corridor arranged on the front side, the lateral side wall doors comprise a first side door and a second side door arranged on the front outer side wall, and the first side door and the second side door are the entrance doors of the middle corridor; middle corridor, experiment operating space are provided with the return air system of oneself separately, the controller is used for passing through middle corridor, experiment operating space's return air system separately lets interior atmospheric pressure is less than in the buffering in the middle corridor.